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Finding the Fourth Proportional to 221.02, 331.26 and 144.07

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Solution

The fourth proportional to 221.02, 331.26 and 144.07 is: 215.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.02 : 331.26 = 144.07 : x
  2. Step 2: Convert to fraction form
    221.02/331.26 = 144.07/x
  3. Step 3: Cross multiply
    221.02x = 331.26 × 144.07
  4. Step 4: Simplify right side
    221.02x = 47,724.63
  5. Step 5: Solve for x
    x = 47,724.63/221.02
  6. Step 6: Final answer
    x = 215.93

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